SYDNEY, AUSTRALIA - MARCH 31: The Milky Way and the Southern Cross become visible above the Sydney Opera House during Earth Hour March 31, in Sydney, Australia. The entire city of Sydney, including companies, government departments, individuals and families have been urged to switch off their lights for one hour. The event is the launch of a 12 month campaign organised by WWF (World Wide Fund for Nature) Australia to reduce Sydney's greenhouse gas emissions by 5%. (Photo by Ian Waldie/Getty Images)

Photo by Ian Waldie/Getty Images

The protostellar mass is so great it could yield a star 100 times the mass of our sun and shine up to 1 million times brighter.

Correction, July 11, 2013: This post originally stated that the core of a huge gas cloud in the Milky Way could create a star 500 times the sun’s mass. The star or stars it creates could be about 100 times the sun’s mass.